Combine like terms:

1. -21a 16a
a -5a
b 5a
c 37a
d -37a**

2. 5 (x 10) x

a 6x 15 **
b 5x 15
c 6x 50
d 4x - 50

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

The median am of triangle ∆abc is half the length of the side towards which it is drawn, bc . prove that triangle ∆abc is a right triangle, and find angle mac and abm

What is the distance from (–3, 1) to (–1, 5)? round your answer to the nearest hundredth. (4 points) a. 3.60 b. 4.12 c. 4.47 d. 5.66